Leucophanite from the Saga 1 Quarry, Norway

Contributed by: Simone Conti
minID: Y30-765
Date: May 28th, 2026
Locality: Saga 1 Quarry, Sagåsen, Auenlandet, Porsgrunn, Telemark, Norway (See on Mindat)
Size: 3 x 2 x 6 cm
Weight: 80.9 g

Description:
Large piece of just leucophanite. Bright pink fluorescence under midwave UV light and violet under longwave, with brief orange phosphorescence/afterglow. The different fluorescence responses are due to an interesting mix of activators, mainly cerium, REE and manganese.

Fluorescence under midwave UV light.

Fluorescence under longwave UV light.

Normal light.

Summary of luminescence responses:

Leucophanite (Mindat) (RRUFF)

• Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Pink
• Fluorescence under Longwave (365nm LED) UV light: Violet
• Afterglow after exposure to Longwave (365nm LED) UV light: Orange